It is unclear how Valve defines "active" in the case of Steam users, but we've have followed up with Valve for further clarification. We'll update this story with anything we hear back.

Valve also announced today that there are now more than 3,700 total games on Steam. More than 1,300 games have been added so far in 2014, which is up substantially compared to last year when only 304 titles were added to Steam in the first nine months of the year.

For more on Steam's wide-ranging Steam Discovery update, which introduces a range of features and functionality aimed at helping you filter through the flood of new releases, be sure to read GameSpot's interview with Valve about it.